Four-Color and Hβ Photometry of the Galactic Cluster NGC 6633

Authors

Edward G. Schmidt, University of Nebraska at LincolnFollow

Date of this Version

1976

Comments

Published in PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 88:63-66, February 1976. Copyright 1976 Astronomical Society of the Pacific. Used by permission.

Abstract

Photometric measurements of stars in the intermediate-age galactic cluster NGC 6633 are presented. From these data the color excess is found to vary slightly across the cluster with an average of E_{b – y} = 0^m.124. The distance modulus is found to be 7^m.711 and the turnoff occurs at about (b – y)₀ = 0^m.l. The cluster is slightly metal poor.